Synthesis of light harvesting polymers by RAFT methods

Chen, Ming; Ghiggino, Kenneth P.; Mau, Albert W. H.; Rizzardo, Ezio; Thang, San H.; Wilson, Gerard J.

doi:10.1039/b206166j

Cited by 72 publications

(59 citation statements)

References 11 publications

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“…Systems studied by mass spectrometry include (polymer/ RAFT agents): PNIPAM/20,22, [78] PNIPAM/39,40, [93] PVAc/49, [48] PS/21, [126] PS/69, [106] PMMA/8,11, [100] PBA/ 57,63, [127] PMA/21,22,24, [81,83] PEA/79, [49] and poly-(acenaphthalene)/81. [128] ESI is a softer ionization technique than MALDI-TOF and is more likely to leave the end groups intact to be observed in the mass spectrum. [100,129] MALDI-TOF analysis was successfully carried out on the poly(acenaphthalene) 82 prepared with RAFT agent 81.…”

Section: Evidence In Support Of the Raft Mechanismmentioning

confidence: 99%

“…[100,129] MALDI-TOF analysis was successfully carried out on the poly(acenaphthalene) 82 prepared with RAFT agent 81. [128] The major peaks in the spectrum (Fig. 10) …”

Section: Evidence In Support Of the Raft Mechanismmentioning

confidence: 99%

“…11 during [128] The peaks are labelled with their measured molecular weights and the number of repeating units (n). The interpeak distances correspond to the mass of the acenapthalene repeat unit.…”

Section: Evidence In Support Of the Raft Mechanismmentioning

confidence: 99%

See 2 more Smart Citations

Living Radical Polymerization by the RAFT Process

Moad¹,

Rizzardo²,

Thang³

2005

Aust. J. Chem.

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2,128

1,894

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This paper presents a review of living radical polymerization achieved with thiocarbonylthio compounds [ZC( S)SR] by a mechanism of reversible addition-fragmentation chain transfer (RAFT). Since we first introduced the technique in 1998, the number of papers and patents on the RAFT process has increased exponentially as the technique has proved to be one of the most versatile for the provision of polymers of well defined architecture. The factors influencing the effectiveness of RAFT agents and outcome of RAFT polymerization are detailed. With this insight, guidelines are presented on how to conduct RAFT and choose RAFT agents to achieve particular structures. A survey is provided of the current scope and applications of the RAFT process in the synthesis of well defined homo-, gradient, diblock, triblock, and star polymers, as well as more complex architectures including microgels and polymer brushes.

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Section: Evidence In Support Of the Raft Mechanismmentioning

confidence: 99%

“…[100,129] MALDI-TOF analysis was successfully carried out on the poly(acenaphthalene) 82 prepared with RAFT agent 81. [128] The major peaks in the spectrum (Fig. 10) …”

Section: Evidence In Support Of the Raft Mechanismmentioning

confidence: 99%

See 1 more Smart Citation

Living Radical Polymerization by the RAFT Process

Moad¹,

Rizzardo²,

Thang³

2005

Aust. J. Chem.

Self Cite

2,128

1,894

View full text Add to dashboard Cite

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“…Oligomer Analysis by 1 H NMR Spectrometry − The 1 H NMR spectra (400 MHz, Figure 2S in Supplementary Information) show characteristic peaks in the aromatic region 6.9-8.2 ppm corresponding to H 1 -H 12 for the azobenzene and phenyl moieties, and H 27-33 for the AcNp repeat units; aliphatic protons H [14][15][16][17][18][19][20][21][22][23][24] are found at 0.6-2.0 ppm. As the maximum number of repeating acenaphthylene monomer units n increases, broadening of signals in both the aromatic and the aliphatic region increases and is in accordance with formation of higher molecular weight oligomers, as shown through MALDI-MS and GPC results.…”

Section: Mechanistically At 120mentioning

confidence: 99%

SFRP Synthesis of Acenaphthylene Oligomers and Block Copolymers. Potential Light Harvesting Structures

Ali¹,

Ahmed²,

Dust³

et al. 2011

Bulletin of the Korean Chemical Society

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Azo-acenaphthylene oligomers with repeating acenaphthylene units "n" up to 4, 5, 7, 17 and 19 have been prepared successfully using nitroxide mediated Stable Free Radical Polymerization (SFRP). Azoacenaphthylene oligomers, reversibly end-capped by the stable nitroxide 2,2,6,6-tetramethyl-1-piperidinoxyl (TEMPO), were further reacted via radical addition to 4-(naphthalenemethoxy)styrene monomer for diblock co-polymer formation. Characterization of the oligomers and diblock co-polymers was accomplished using MALDI-MS supported by GPC (Gel Permeation Chromatography) and 1 H NMR spectrometry. MALDI-MS afforded definitive results by providing an inter-peak interval of 152 (m/z), corresponding to acenaphthylene monomer, and inter-peak interval of 260 (m/z) for the naphthalenemethoxystyrene monomer unit in block copolymers. Our study opens the way to control the number of repeat units in the oligomers. Further these oligomers can be tailored with various monomers for the formation of block copolymers.

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“…In 1998, Kim et al [19] incorporated the anthrancene-group into the middle of the polymer chains by the ATRP method. Ghiggino et al [20][21][22] reported the synthesis of a functionalized RAFT agent, RAFT-AN, with anthracene in the R group of the RAFT agent. In a previous paper, we have reported the RAFT polymerization of styrene with anthracen-9-ylmethyl benzodithioate (AMB) [9] as the RAFT agent.…”

Section: Introductionmentioning

confidence: 99%